Aeroplane motor fuel



Patented Sept. 12, 1922.

UNITED STA TES PATENT OFFICE.

WALTER T. SCHREIBER, OF BALTIMORE. MARYLAND, ASSIGNOR TO U. S. INDUSTRIAIJ ALCOHOL 00., A CORPORATION OF WEST VIRGINIA. V

AEROPLANE MOTOR FUEL.

No Drawing. Application filed June 25, 1918, Serial No. 241,794. Renewed August 11, 1919. Serial T 0 all whom it may concern:

Be it .known that I, WALTER T. SoHnEInER, of Baltimore, in the State of Maryland, have invented a certain new and useful Improvement in Aeroplane Motor Fuel, and do hereby declare that the follow.- ing is a full, clear, and exact description thereof. My invention relates particularly to fuels designed to be. used in aeroplane motors, but is applicable for use in internal combustion motors of all kinds used in flying or for other purposes.

The object of my invention is to provide a fuel which is especially adapted for use in aeroplanes, although it is also applicable for use in internal combustion engines in general. i i

It is necessary that fuels which are to be used in aeroplane motors shall have great dependability, inasmuch as any uncertainty in the operation. of the aeroplane, by reason of variability in the character of the fuel or failure of the fuel to perform its'intended work, may bring about disastrous consequences. v i

For this reason, it is desirable toavoid using in suchfuels large percentages of petroleum products, inasmuch as commercial petroleum products. do notordinarily have a constant composition, and are usually comprised of varying quantities of a number of different constituents.

- It is,'therefore, the object of my inventipn to provide an aeroplane fuel avoiding these disadvantages and taking into account the circumstances above referred to.

Further ob ects of my iIIVGIItlOII Wlll ap- .pear from the detailed description thereof contained hereinafter,

, While my invention is capable of being carried out in different Ways, for the-pur-' pose of illustration I shall describe only certain ways of carrying out the same herein.

For example, a fuel made in accordance wlth my invention may be comprised of:

40 parts by volume of ethyl alcohol,

30 parts by volume of benzol,

30. parts by volume of .gasolene or naphtha havlng a specific gravity of from 52 B. to 66 B.

5 parts by volume of sulphuric ether.

The percentages of the above constituents may vary to some extent beyond the percentages herein mentioned, if desired. For example, the alcohol may vary from 40 to the benzol from 25 to 35%, the gasolene or naphtha from 30 to 50%, and

the sulphuric ether may range in percentage from 5 to 20%, although I have obtalned the best results by the specific composition above given.

The ethyl alcohol in the above composit1on may be the ordinary alcohol having a strength of 95%, but I may, if desired, use an alcohol having a greater strength.

By the use of the ether I avoid the necessity of using alcohol having a greater strength than 95%, as theether itself will prevent the benzol from crystallizing out at very low temperatures.

Instead of the ethyl'alcohol, however, I may use methyl alcohol or butyl alcohol, and instead of the benzol I may use toluol,

and instead of the sulphuric ether I may use butyl ether. By the term lower alcohols in the claims I mean to cover ethyl alcohol, methyl alcohol, butyl alcohol, and such other members of the alcohol series as have fairly low boiling points and are similar in properties to the alcohols above named.

Aeroplane fuels made in the manner described above can be used with greatest reliability in the operation of aeroplanes, not: withstanding the varied atmospheric conditions to which aeroplane motors are subjected.

Furthermore, the percentage of light petroleum distillate that. is gasolene or naphtha, therein is sufficiently low to preent th variations in the. composition thereof from having any appreciable effect upon the operation of internal combustion" engines Operated thereby.

Nevertheless, all of these fuels are of such a nature that they may be readily used in internal combustion engines generally whether used for operating aeroplanes or benzol and from 5 to 20 arts ethyl ether.

2.--A homogeneously lended fuel comprising ethyl alcohol, about 40 parts gasolene, about parts benzol and about 5 parts ethyl ether.

3. A homogeneously blended fuel comprising about 40 to 60 parts of alcohol, to 50'parts light petroleum distillate, 5 to 20 arts of ether, and benzol.

4. A homogeneously blended fuel comprising .a lower alcohol, a light petroleum distillate,'benzol, and at least 4 per cent' of ether. v

5. A fuel, the constituents of which are homogeneously blended and will not separate out at low temperatures, comprising a light petroleum distillate, a lower alcohol, benzol, and at least 4, er cent of a fourth constituent which has t 'elproperty 'of high volatility and of preventing the separation of the benzol.

In testimony that I claim the foregoing I have hereunto set my hand.

Witnessesf JOHN P. GISCHEL, ARTHUR WRIGHT. 

